Ragwort may refer to a number of plant species: * Certain members of the genus Senecio (ragworts and groundsels) including: * Senecio ampullaceus, Texas ragwort * Senecio cambrensis, Welsh ragwort * Senecio squalidus, Oxford ragwort * Senecio viscosus, sticky ragwort * Certain members of the genus Jacobaea (a segregate of Senecio): * Jacobaea vulgaris, (tansy) ragwort, a very common wild flower in Europe, widely naturalised elsewhere * Jacobaea aquatica, water ragwort, marsh ragwort * Jacobaea erucifolia, Hoary ragwort * Certain members of the genus Packera including: * Packera obovata, Roundleaf ragwort * Packera aurea, golden ragwort * Certain member of the genus Pericallis including: * Pericallis hybrida, common ragwort * Certain members of the genus Rugelia including: *